I really like the way you painted the forehead, very interesting style. What's out of place to me is the lack of any light on the mustache, although it's not nearly as reflective as skin (and you've placed highlights on the skin), the right side of the mustache would still be lighter, I think. Same with the right nostril, I feel like there would be a value difference between it and the left one, since the right is closer to the light source, but there is little value difference between them.
Great red nose, haha.